diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f366916..ff56477 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   tests:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 30
     strategy:
       matrix:
@@ -34,7 +34,7 @@ jobs:
       uses: coverallsapp/github-action@8d6379e14d29928660c4ba802d8e85393440b329 # v2.3.8
 
   docs:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 15
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index e49aab0..a8e8af4 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -14,7 +14,7 @@ permissions:
 jobs:
   checks:
     name: Version check
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
     - name: Checkout repository
       id: repo
@@ -42,7 +42,7 @@ jobs:
   version:
     name: prepare ${{ github.event.inputs.version }}
     needs: checks
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
 
       - name: checkout
@@ -74,7 +74,7 @@ jobs:
   tag:
     name: tag release
     needs: version
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -91,7 +91,7 @@ jobs:
   release:
     name: make github release
     needs: tag
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
 
       - name: create release
@@ -104,7 +104,7 @@ jobs:
   pypi:
     name: make pypi release
     needs: [tag, release]
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
 
     - name: checkout